For more explanation, please read the official document: BGR.pdf . (English)

Online Map

This is online map of the address Черковна / Cherkovna, Черковна / Cherkovna, Дулово / Dulovo, Силистра / Silistra. You may use button to move and zoom in / out. The map information is for reference only.
Latitude:43.85,
Longitude:27.1833.